Denatured-alcohol-gas student-lamp.



PATENTED AUG. 6, 1907.-

, 1G. G. SGHROBDER. 'DENATURED ALCOHOL GAS STUDENT LAMP.

AYPLIGATION FILED NOV. 7, 1906.

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PATENTED AUG. 6, 1907. 'G. SOH'RO'EDER.

DENATURED ALCOHOL GAS STUDENT LAMP.

APPLICATION FILED NOV. 7, 1906.

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' APPLICATION FILED NOT-7, 1906.

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V nuentoz age Qflafiraeder- 7n: umems PETERS UNITED STATES PATENTornron.

GEORGE G. SCHROEDER, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TOINDUSTRIAL ALCOHOL HEAT AND LIGHT COMPANY, A CORPORATION OF SOUTHDAKOTA.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed November 7, 1906. Serial No. 342,373,

To all whom it may concern:

Be it known that I, GEORGE G. Sonnonnna, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Denatiu'ed-Alcohol-GasStudent-Lamps, of which the following is a specification.

This invention has relation to denatured alcohol gas student lamps, andit consists in the novel construction and arrangement of its parts ashereinafter shown and described.

The object of the invention is to provide a lamp of the character asindicated, which is adapted to receive denatured alcohol as a fuel andconvert the same into a gas. Means is also provided for mixing such gaswith air and for conducting the resultant mixture to a mantle where thesame is consumed and produces a bright light. Simple means is alsoprovided for starting the lamp by the use of the fuel in its liquidstate, and after the parts of the lamp are thoroughly heated the saidstarting means is dispensed with when the lamp gasifies and mixes theelements automatically.

The lamp consists primarily of a stand upon which is mounted areservoir, a pipe connects said reservoir with a burner, the said burnerbeing of special construction.

The burner consists of inner and outer cylinders spaced apart. The saidsupply pipe communicating with the space between the cylinders. Theinner cylinder near its upper end is provided with a series ofsprayperforations, arranged preferably in a horizontal row, while theupper end of the inner cylinder is covered with a foraminous material. Amantle is arranged above the cylinders. The lower end of the innercylinder is open for the admission of air, and the inner cylinderconstitutes a mixing chamber. A starting pan is arranged about the lowerportion of the outer cylinder, and the said outer cylinder forms theinner wall of the said starting pan. A pipe of small transverse diameteris connected with the supply pipe, and is arranged to deliver the liquidfuel by gravity into the starting pan. The said pipe is provided with avalve, as is also the main supply pipe.

In the accompanying drawings'.-Figure 1, is a perspective view of thelamp with parts broken away.

Fig. 2 is a side elevation of the lamp with parts in section. Fig. 3, isa vertical sectional view of the burner, and :-Fig. 4, is a horizontalsectional view of the burner cut on the line 4-4 of Fig. 3.

This lamp comprises the stand 1, upon which is mounted the liquid fuelreservoir tank 2. Said tank 'is capable of vertical adjustment upon thestand 1, in

the manner common to students lamps. The supply pipe 3, connects withthe reservoir 2, and is provided at a point between its ends with thevalve 4. The

other end of the said pipe 3, is divided into a number of branches 5, 5.I

The burner consists of the outer cylinder 6, and the inner cylinder 7,which are spaced apart. The inner cylinder is open at its upper andlower ends, and over its upper end is located the foraminous material 8.The inner and outer cylinders are united at their upper ends by suitablewalls to form a closed annular vaporizing chamber surrounding the innercylinder. The said inner cylinder is also provided near its upper endwith a series of spray perforations 9, which are arranged in ahorizontal row. The branches 5, 5, communicate with the space betweenthe cylinders 6, and 7.

The starting pan comprises a casing surrounding the lower portion of theouter cylinder 6, and having air inlets in its bottom, the top edgebeing flared at 10 to form the starting pan, proper, the inner Wall ofthe said pan being formed by the said outer cylinder. The reduced pipe11 leads up from the pipe 3, and terminates above the edge of thestarting pan l0. Said pipe 11 is provided with a valve 12. The mantle 13is located above the cylinders 6 and 7, and the lower end of the saidmantle receives the said cylinders. 14 surrounds the said mantle and thecylinders.

The operation of the lamp is as follows :-Liquid fuel of the characterstated is placed in the reservoir 2. Said liquid flows by force ofgravity from the said reservoir through the supply pipe 3. Before thelamp is lighted the valve 4 is closed, and the valve 12 is opened. Thusthe liquid passes up through the pipe and enters the starting pan 10.The liquid in the said starting pan is then ignited. The heat from theflame heats the cylinders 6 and 7, and adjacent parts of the burner.When the said parts are sufficiently heated, the valve 12 is closed, andthe valve 4 is opened. The liquid then passes up into the branches 5, 5,of the pipe 3. The said branches having become heated, the liquid beginsto vaporize, and when it enters the space between the cylinders 6 and 7,said vapor is converted into gas. The gas thus formed is sprayed by itsown compression through the perforations 9, and is mixed with air comingup through the lower end of the inner cylinder 7. As the mixture passesthrough the foraminous material 8 it is separated into fine streams,thus effecting a more complete commingling of the air and gas. Themixture then passes to the meshes of the mantle 13, where it is ignitedand produces a brilliant illumination. In order to put the light out,the valve 4 is.

closed.

It will thus be seen that a simple and effective means is provided forconverting denatured alcohol into a highly efficient and brilliantilluminant, and that the means is easy of operation and is attended withno danger.

The chimney Having described my invention, what I claim as new anddesire to secure by Letters Patent is 1. In a lamp of the characterdescribed, a burner formed with an outer vaporizing chamber and acentral combustion chamber, a cup like casing embracing the exteriorwall 01' said burner and closing the lower end of said combustionchamber, said casing being provided with air inlet perforations, theupper edge of said casing being flared to form a starting pan, and meansfor supplying hydrocarbon to said vaporizing chamber.

2. In a lamp of the character described, a burner formed with an outervaporizing chamber and a central combus tion chamber, a cup-like casingembracing the exterior wall of said burner and closing the lower end ofsaid combustion chamber, said casing being provided with air inletperforations, the upper edge of said casing being flared to form astarting pan, and a feed pipe passing through said casing andcommunicating with said vaporizing chamber.

3. In a lamp of the character described, a burner formed with an outervaporizing chamber and a central combustion chamber, a cup-like casingembracing the exterior wall of said burner and closing the lower end ofsaid combustion chamber, said casing being provided with air inletperforations, the upper edge of said casing being flared to form astarting pan, and a feed pipe passed through said casing and providedwith branches located in said combustion chamber and communicating withsaid vaporizing chamber.

4. In a lamp of the character described, a gas generating burnercomprising a casing formed of two concentric walls joined at their upperand lower edges to form a closed vaporizing chamber and a centralcombustion cham her, the inner wall being provided with vapor outletsleading to said combustion chamber, a casing surrounding the outer Wallof said burner and provided with air openings, the upper edge of thelast mentioned casing being flared to form a starting pan, and meansforsupplying hydrocarbon to said vaporizing chamber and said startingpan.

5. In a lamp of the character described, a gas generating burnercomprising a casing formed of two concentric walls joined at their upperand lower edges to form a closed vaporizing chamber and a centralcombustion chamher, the inner wall being provided with vapor outletsleading to said combustion chamber, a casing surrounding the outer wallof said burner and provided with air openings, the upper edge of thelast mentioned casing being flared to form a starting pan, and a feedpipe passed through the last mentioned casing and provided with branchesprojected into said combustion chamber and communicating with saidvaporizing chamber. 7

G. In a lamp of the character described, a gas generating burnercomprising a casing formed of two concentric walls joined at their upperand lower edges to form a closed vaporizing chamber surrounding acentral combustion chamber, the inner wall being provided with vaporoutlets leading to said combustion chamber, a reservoir, a supply pipeleading therefrom to said vaporizing chamber, and means for regulatingthe supply from said reservoir.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BERLIN G. BRAUN, C. L. MILLARD.

